Launch python script with jupytext from command line?

[manzt]

Really nice project! I've been test driving it with juv. The launcher overview in Jupyter Lab is really nice, but the flow right now I'm aiming for is to launch one-off notebooks from the command line (directly to the notebook):

juv run notebook.py

Is there some setup or setting with JupyterLab/Jupytext that would open the script by default using jupytext? I couldn't find a setting. Thinking something like:

jupyter lab notebook.py # [ flags?]